linux-kernel - [PATCH v3 1/7] usb: typec: ucsi: move ucsi_acknowledge() from ucsi_read

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Message-Id: <20240625-ucsi-rework-interface-v3-1-7a6c8e17be3a@linaro.org>
Date: Tue, 25 Jun 2024 17:54:26 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: Nikita Travkin <nikita@...n.ru>, 
 Neil Armstrong <neil.armstrong@...aro.org>, linux-usb@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v3 1/7] usb: typec: ucsi: move ucsi_acknowledge() from
 ucsi_read_error()

As a preparation for reworking UCSI command handling, move
ucsi_acknowledge() for the failed command from ucsi_read_error() to
ucsi_exec_command().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/usb/typec/ucsi/ucsi.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index 76c48d873b2a..297d939e8da8 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -70,11 +70,6 @@ static int ucsi_read_error(struct ucsi *ucsi)
 	u16 error;
 	int ret;
 
-	/* Acknowledge the command that failed */
-	ret = ucsi_acknowledge(ucsi, false);
-	if (ret)
-		return ret;
-
 	ret = ucsi_exec_command(ucsi, UCSI_GET_ERROR_STATUS);
 	if (ret < 0)
 		return ret;
@@ -153,13 +148,14 @@ static int ucsi_exec_command(struct ucsi *ucsi, u64 cmd)
 	}
 
 	if (cci & UCSI_CCI_ERROR) {
-		if (cmd == UCSI_GET_ERROR_STATUS) {
-			ret = ucsi_acknowledge(ucsi, false);
-			if (ret)
-				return ret;
+		/* Acknowledge the command that failed */
+		ret = ucsi_acknowledge(ucsi, false);
+		if (ret)
+			return ret;
 
+		if (cmd == UCSI_GET_ERROR_STATUS)
 			return -EIO;
-		}
+
 		return ucsi_read_error(ucsi);
 	}
 

-- 
2.39.2